I'm delighted to help you out here with your bank feeds concern, @WrapnPack.
Let me give you a quick overview about this feature. Yes, you can connect your account in QuickBooks Online to download transactions and import entries manually at the same time. Here's how:
- Click the profile ⚙ icon, then select Bank accounts.
- Find the name or URL of your bank in the search box, then press Continue.
- If you have a previously connected account, select Connect another.
- Add the sign-in info you use for your bank's website.
- Press Connect after.
You can upload the transactions from Nationwide bank. Here's how:
- Click the Gear icon and choose Imports.

- For accounts that are not yet connected for online banking, tap the import transactions link at the bottom.

- Press Browse to find the CSV file of the bank entries.

- After this, all the transactions will be listed at the bottom. Make sure to map the data correctly.
- Hit Continue then Done.
I'm adding a few related articles below to guide you further with the process:
Come back to our forum for other questions or clarifications with banking or the import process in QuickBooks Self-Employed. I'll be happy to help.